Paper cutting machine



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PAPER GUTTING MAGHINB.

No. 434,285. Patented Aug. 12, 18.90.

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Wl TN E SSE S A TTOHNE YS [No Model.)

No. 434,285. Patented Aug. 12, 1890.

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PAPER CUTTING MACHINE.

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Patented Angl-2, 1890.

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A TTOHNE YS UNITED STATES PATENT OFFICE.

ALEXANDER MALM, OF NEW YORK, N. Y., ASSIGN OR TO T. W. & C. B.lSHERIDAN, OF SAME PLACE.

PAPER-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 434,285, dated August12, 1890.

Application iiled October 31, 1889. Serial No. 328,767. (No model.)

.To all whom t may concern.

Be it known that I, ALEXANDER MALM, a citizen of the United States,residing at New York, in the county and State of New York, have inventednew and Auseful Improvements in Paper-Cutting Machines, of which thefollowing is a specification.

This invention relates to certain improvements in paper-cutting machinesof that class in which both the knife and the paper-clamp are situatedabove the work-table and connected in such a manner that the pressure ofthe clamp upon the paper increases or diminishes with the resistancewhich is to be overcome by the knife.

The peculiar and novelconstruction of my paper-cutter is pointed out inthe following specification and claims, and illustrated in theaccompanying drawings, in which- Figure l represents a side elevation.Fig. 2 is a front elevation. Fig. 3 is a horizontal section in the planex, Fig. l. Fig. 4 is a similar section in the plane y y, Figs. I and 2.Fig. 5 is a transverse section in the plane zz, Fig. 2.

In the drawings, the letter A designates the frame which supports theworking parts' of my machine.

B is the work-table.

C is the knife, and D is the paper-clamp The knife C is firmly securedto a crosshead E, from which extends a stud into an oblique slot, Fig.2, whereby a shear cut is imparted to the knife.

F F are two toothed segments, which are loosely mounted upon hollowstuds G G, Fig. 3, secured in the standards of the frame A. On each ofthese segments is secured a stud a, which swivels in its bearing, andwhich connects by a pivotb with the lower end of a connecting-rod c. Theupper end of this connecting-rod is attached, by means of a pivot d, toa link e, which is connected to the crosshead E by means of a pivot f,Figs. 1 and 2. By these means universal joints are formed at both endsof each of the connecting-rods c, so that the same can readilyaccommodate themi selves to the compound movements of the knife and alsoto the movements of the seg ments.

much heavier than those portions which form y the bearings for theswivel-studs a, so that said segments when left to follow their gravityassume the position shown in the drawings, in which position they arearrested by stops 'g, Fig. l, the weight of said segments being suchthat by their action the cross-head E, together with the knife C, iselevated above the table B, Figs. l and 5.

The paper-clamp D is rmly connected to slides h, which move in guidewaysi, Figs. 4 and 5, formed ou the inner surfaces of the standards oftheframe A, and the lower ends of which are connected by a traversej. Thistraverse connects by links la with levers H, which swing on studs l inthe standards of the frame A, and the loose ends of which are pivoted toarms m,.which are loosely mounted on the traveling shaft I. This shaftextends loosely through straps n n, which swing loosely on thedriving-shaft J, and on the outer ends of said shaft I are firmlymounted pinions o o,

which engage the toothed segments F F. The driving-shaft J extendsloosely through the hollow studs G G, Fig. 3,and on it are looselymounted two pinions 1o p', between which is situated a clutch-sleeve K,which connects with the drivin g-shaft by a feather-key q, and which isso constructed that it can be thrown in engagement either with thepinion p or with the pinion p.

The pinion p is in gear with a cog-wheel L by means of an intermediatepinion pl, said cog wheel L being firmly mounted on the traveling shaftI, and the pinion p meshesinto a cog-wheel M, which is firmly mounted onthe traveling shaft I. If the clutch-sleeve K is thrown in gear with thepinion p', the traveling shaft Iv is rotated in the direction of arrow1, Figs. l and 5, the segments F are turned in the direction of thearrows marked thereon in Figs. 1 and 5, and the knife C is caused todescend. If the clutch K is thrown in gear with the pinion p, thetraveling shaft IOC I rotates in the direction opposite to the arrow land the paper-clamp D is raised, so that a fresh pile of paper can beintroduced.

The clutch-sleeve K can be moved bya handlever N, and it is movedautomatically by one of the toothed segments F as soon as the knife Chas completed its downward stroke. For this purpose the hand-leverNisconnected by a rod fr with a bell-crank lever O, from which extends atappet-rod P, Figs. l and 3, the free end of which is in such a positionthat it is acted upon by the segment F, and that the clutch-sleeve ismoved at the moment the knife has completed its downward stroke. As soonas the clutch-sleeve is thrown out of gear with the pinion p thesegments F return to their normal position and the knife is raised, andas the clutch-sleeve engages the pinion p the paper-clamp is raised andthe paper can be adjusted for the next cut.

Vhat I claim as new, and desire to secu re by Letters Patent, is-

l. In a paper-cutter, the Combination, with the knife and with itscross-head, of toothed segments mounted loosely on the drivingshaft, androds extending from the cross-head to the segments and connected to thelat-ter close to the shaft, whereby the gravity of the segments isenabled to raise the cross-head and the knife, substantially asdescribed.

2. The combination,with the frame A, crosshead E, and knife C, of thedriving-shaft J, the segmental gears F F, loosely mounted on the drivingshaft, the rods c, universally jointed to the segmental gears and to thecross-head, a traveling shaft I, adapted to rotate in reverse directionsand having two pinions meshing, respectively, with the segmental gears,the paper-clamp D, connections between the traveling shaft andpaper-clamp, and clutch mechanism for imparting motion in reversedirections to the traveling shaft from the driving shaft on which thesegmental gears are loosely mounted, substantially as described.

The combination, with the cross-head E, the knife C, and clamp D of apaper-cutter, of the driving-shaft J, the segmental gears F, looselymounted on the driving-shaft, the rods c, jointed to the segmental gearsand to the Vcross-head, the traveling shaft I, connected with the clampand geared to the segmental gears, a clutch mechanism for impartingmotion in reverse directions to the traveling shaft from the drivinof-shaft, and a clutchoperating lever having a tappet P, arranged in thepath of and operated by one of the segmental gears, substantially asdescribed.

et. In a paper-cutter, the combination, with the knife C and the clampD, of the drivingshaft J, the segments F, mounted loosely on the driving-shaft, the stops g for arresting the segments, the traveling shaft I,the pinions o, mounted on the traveling shaft and engaging the segmentsF,the pnions p 19', mounted loosely on the driving-shaft and geared in areverse direction to the traveling shaft and the clutch-sleeve K,snbstan tiall y as described.

In testimony whereof I have hereunto set my hand in the presencc'of twosubscribing witnesses.

ALEXANDER MALM.

Vitnesses:

XV. C. l-IAUFF, E. F. KAs'rENI-IUBER.

